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x-(x*15/100)=1200
We move all terms to the left:
x-(x*15/100)-(1200)=0
We add all the numbers together, and all the variables
x-(+x*15/100)-1200=0
We get rid of parentheses
x-x*15/100-1200=0
We multiply all the terms by the denominator
x*100-x*15-1200*100=0
We add all the numbers together, and all the variables
x*100-x*15-120000=0
Wy multiply elements
100x-15x-120000=0
We add all the numbers together, and all the variables
85x-120000=0
We move all terms containing x to the left, all other terms to the right
85x=120000
x=120000/85
x=1411+13/17
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